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K. M. Manikandan A. Yelilarasi P. Senthamaraikannan S. S. Saravanakumar Anish Khan Abdullah M. Asiri 《Journal of Solid State Electrochemistry》2018,22(12):3785-3797
The effect of polypyrrole (PPy) on the polyvinyl alcohol (PVA)-potassium iodide (KI)-iodine (I2) polymer electrolytes has been investigated and optimized to use in a dye-sensitized solar cell (DSSC). The different weight ratios of PVA: PPy (93: 2, 91: 4, 89: 6, 87: 8, and 85: 10 wt%) polymer electrolytes (PE) were prepared by solution casting. Structural, complex formation and surface roughness of the prepared electrolytes was confirmed by X-ray diffraction, FTIR, and atomic force microscopy (AFM) respectively. Conductivity plots of all polymer films showed increasing trend with temperature and concentration of PPy. The activation energy of the optimized system found to be 0.871 kJ mol?1. UV-visible spectrum was adopted to characterize the absorption spectra of the material revealed that increase in the absorbance with increasing PPy content and shifting the absorbance maximum towards lower energy. The indirect band gap decreased from 3.78 to 2.14 eV and direct band gap decreased from 3.88 to 2.71 eV. The EIS analyses revealed the lower charge transfer resistance of 3.029 Ω cm2 at the interface between CE and PE. The excellent performance was observed in the fabricated DSSCs using PVA (85%)/PPy (10%)/KI (5%)/I2 polymer electrolyte with a short-circuit current density of 11.071 mA cm?2, open-circuit voltage of 0.644 V, fill factor of 0.575, and photovoltaic conversion efficiency of 4.09% under the light intensity of 100 mW cm?2. Hence, the PPy content in polymer electrolyte influences the remarkable performance of low-cost DSSC. 相似文献
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Manikandan K. M. Yelilarasi A. Pandaram P. Senthamaraikannan P. Saravanakumar S. S. Khan Anish Asiri Abdullah M. 《Journal of Solid State Electrochemistry》2020,24(2):251-261
Journal of Solid State Electrochemistry - In the present study, γ-ray-irradiated and un-irradiated PVA/PPy/KI/I2 conducting polymer electrolytes have been prepared for dye-sensitized solar... 相似文献
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K. M. Manikandan A. Yelilarasi P. Senthamaraikannan S. S. Saravanakumar Anish Khan Abdullah M. Asiri 《International Journal of Polymer Analysis and Characterization》2019,24(3):257-265
Recently, polymer nanocomposites can offer to enhance the tremendous development of reinforcements and broaden their use in feasible applications. The polyvinyl alcohol (PVA) polymer based bio-nanocomposite film reinforced with different amount of Eleusine Coracana (EC) particles from 5 to 25?wt% were prepared by the solution cast. The bio-nanocomposite (PVA/EC) film was characterized by the X-ray diffraction (XRD), and Fourier transform infrared (FTIR). Thermo-gravimetric analysis (TGA) is used to estimate the thermal degradation of polymer bio-nanocomposites. From the Atomic Force Microscopy (AFM) analysis, the surface roughness of the (PVA/EC) film was analyzed. 相似文献
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K. M. Manikandan A. Yelilarasi P. Senthamaraikannan S. S. Saravanakumar Anish Khan Abdullah M. Asiri 《International Journal of Polymer Analysis and Characterization》2019,24(4):326-333
A poly (vinyl alcohol) PVA/Eriochrome Black-T (EBT) dye, and PVA/Eosin-Y (EY) dye composite film was prepared using a solution casting process. The dye-doped composite polymer films were characterized by UV–vis spectroscopy. An optical band gap (Eg) of pure PVA reduced from 4.22?eV to 2.80?eV for PVA/EBT film and 2.14?eV for PVA/EY film respectively. This result indicates the occurrence of inter-molecular hydrogen bonding between the –OH functional group in PVA chains and sulfonate (EBT) and carboxyl group (EY) in dye molecules, respectively. Moreover, the experimental result of PVA/EBT and PVA/EY composite film showed the excellent properties of a large scale cut-off filter in the ultraviolet and visible range region. 相似文献
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